Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-07-2024 14:04

General

  • Target

    Zhn-x560.exe

  • Size

    1.0MB

  • MD5

    8ed51302c2a028d072bc78ad727108d9

  • SHA1

    2d0efc98916ef84b948b0539c41f40dbf27f288f

  • SHA256

    2b7a912fed6d5cec866c8887476393056508909f8468c23ccd201ae52b770738

  • SHA512

    6a97921492c363553b923b1b933aaf604eb2be8d0b53330dfb3ecf06d67c1ad7ded782b2dd30c43ace976f3c5f55e85dda7dff1675769dc6d7b3c1a420bb5800

  • SSDEEP

    12288:+p4YyDipAhZKG367go9LhnB7v5JckUNKiXx+oP1NM7EUbOF8nL2PFfq5Q+q58:+p4YMewTaLftyKiXsqEzb+NpqU8

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

robertjoe607.ddns.net:1987

Mutex

3b928790-243f-46ea-931c-42154cd292bb

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-14T18:34:22.190897536Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    1987

  • default_group

    joe

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    3b928790-243f-46ea-931c-42154cd292bb

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    robertjoe607.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Zhn-x560.exe
    "C:\Users\Admin\AppData\Local\Temp\Zhn-x560.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lEsuaBGK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAAD1.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:316
    • C:\Users\Admin\AppData\Local\Temp\Zhn-x560.exe
      "C:\Users\Admin\AppData\Local\Temp\Zhn-x560.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3644
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAD62.tmp"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3788

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Zhn-x560.exe.log
    Filesize

    1KB

    MD5

    17573558c4e714f606f997e5157afaac

    SHA1

    13e16e9415ceef429aaf124139671ebeca09ed23

    SHA256

    c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

    SHA512

    f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

  • C:\Users\Admin\AppData\Local\Temp\tmpAAD1.tmp
    Filesize

    1KB

    MD5

    7c8f2dd9fd2bb4f38252823e14e46d83

    SHA1

    6308a62b560eaf17ac821098984f899370516819

    SHA256

    ef1166ff712e6d5b6c0271dea920f6e01c33cd2b01c9ee98cb44a081a1b6f763

    SHA512

    8e609ea94bacba6ea006b541a471c23ae387c3ee1fa4b8039c1d9daca42a006507c76af80c0b58c215a80efce8cceedffd6c645b11ed104fbd6d6106d6a6aba2

  • C:\Users\Admin\AppData\Local\Temp\tmpAD62.tmp
    Filesize

    1KB

    MD5

    ec0196350a484d1d0818621ffcf39b33

    SHA1

    76ff61cc03ac77270760132057eb12612eca9beb

    SHA256

    63f1d86405afd49db32b4cec03400c3b8cae7bc7bcb1d81287525919b8e4a0cf

    SHA512

    aa114d5554b78fa8aa88d2d4279dded70a60ca1ecb4c46b7ded6828724e8249c7d1a314b1499e4cd8ea8742949a439d3c85dd4c288a527a0bd5e06761beaf56d

  • memory/3644-31-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/3644-17-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/3644-30-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/3644-29-0x00000000066B0000-0x00000000066BA000-memory.dmp
    Filesize

    40KB

  • memory/3644-28-0x0000000005780000-0x000000000579E000-memory.dmp
    Filesize

    120KB

  • memory/3644-27-0x0000000005670000-0x000000000567A000-memory.dmp
    Filesize

    40KB

  • memory/3644-22-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/3644-21-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-4-0x0000000005090000-0x0000000005122000-memory.dmp
    Filesize

    584KB

  • memory/4004-11-0x0000000000EE0000-0x0000000000F48000-memory.dmp
    Filesize

    416KB

  • memory/4004-3-0x0000000005640000-0x0000000005BE4000-memory.dmp
    Filesize

    5.6MB

  • memory/4004-10-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-1-0x0000000000450000-0x000000000055A000-memory.dmp
    Filesize

    1.0MB

  • memory/4004-20-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-9-0x000000007456E000-0x000000007456F000-memory.dmp
    Filesize

    4KB

  • memory/4004-0-0x000000007456E000-0x000000007456F000-memory.dmp
    Filesize

    4KB

  • memory/4004-8-0x0000000005340000-0x000000000534A000-memory.dmp
    Filesize

    40KB

  • memory/4004-7-0x0000000005230000-0x0000000005286000-memory.dmp
    Filesize

    344KB

  • memory/4004-6-0x0000000074560000-0x0000000074D10000-memory.dmp
    Filesize

    7.7MB

  • memory/4004-5-0x0000000004F40000-0x0000000004F4A000-memory.dmp
    Filesize

    40KB

  • memory/4004-2-0x0000000004F50000-0x0000000004FEC000-memory.dmp
    Filesize

    624KB